GM1 ORA.FSTD.100(d) General

• ED Decision 2026/006/R found in: Easy Access Rules for Aircrew (Oct 2026)

##### GM1 ORA.FSTD.100(d) General *ED Decision 2026/006/R* **FSTD PERFORMANCE METRICS** (a) Organisations should develop and maintain a consistent methodology to calculate and report performance metrics. These values are not only a means to demonstrate compliance with point [ORA.FSTD.100](#_DxCrossRefBm2072462906)(d) but also form part of the organisation’s management system for ensuring continued FSTD performance. This data can also inform proactive maintenance decisions and support dialogue with FSTD users, FSTD providers and competent authorities. (b) The performance metrics may be used by the organisation operating the FSTD to demonstrate to the competent authority: (1) the performance of an FSTD to facilitate the competent authority’s assessment on extension of the recurrent evaluation period of the FSTD; (2) the effectiveness of its management system with regard to the FSTD operation and maintenance. (c) For calculation of the metrics as referred to in point (b) of [AMC1 ORA.FSTD.100(d)](#_DxCrossRefBm2072463119), the following may serve as guidance: (1) ‘FSTD support time’ may include the following times: (i) out of service: closure of the training centre, scheduled out of service because of major update; (ii) maintenance: preventative and corrective; (iii) engineering: development, improvement of the FSTD; (iv) regulatory: authority evaluation, QTG rerun, activities under point [ORA.FSTD.225](#_DxCrossRefBm2072462912), fly-out; (v) configuration: change of configuration, time between two FSTD sessions, etc. (2) ‘FSTD downtime’ can be during scheduled training or even when the training is not impacted. This metric takes into account all events that could affect the availability of the FSTD. (3) ‘External failure time’ is time lost during planned available time due to external factors such as facility related causes; operator/user causes; scheduling/logistical causes; environmental or external disruptions. *[applicable from 30 April 2028 — ED Decision 2026/006/R]*